Paper fastening and crimping press



March 3, 1942. N. s.` NOLL Y PAPER PASTENING AND CRIMPING PRESS Filed July 4, 1939 MWI" l NR. w. mv W fMMmWA H/ f4 M 0 HG. Z.

9 4. z\\\\\\\\\\ EE Patented Mar. 3, 1942 UNITED STATESPATENT OFFICE PAPER. FASTENING AND CRIMPING PRESS Norman S. Noll, Los Angeles, Calif.

Application July 4, 1939, Serial No. 282,834-

4 Claims. (Cl. 9.3-1.1)

This invention has for apurpose the provisions of a new and improved hand press for fastening sheets of paper and similar items together without the use of extraneous fastening elements, such as metal staples, or the formation of paper tongues threaded through openings in the paper or necessitating the creation of bulky creases, folds or other appreciably raised formations.

An important object of this invention is to provide a crimping and fastening press of the character described, including paper crimping dies of novel construction and arrangement having crimping teeth which when pressed into enmeshing relation, with sheets of paper therebetween will produce an interlocking fastening of the sheets together by forming comparatively small and shallow crimps which intert or mesh and produce a flat weld joint without mutilating the paper or creating an appreciable hump or raised portion, said crimps securely holding the sheets together yet permitting of the intentional pulling of said sheet apart without mutilation thereof.

Another purpose of my invention is to provide a simple and etcient press of the character described which includes a base supporting one of the crimping dies, a lever carrying the other crimping die, a lever-like operating handle and a link connecting the handle and lever in an arrangement facilitating an easy and reliable crimping and paper fastening operation of the press.

A further purpose is to provide apress of the character described having toothed crimping dies wherein the teeth are constructed and related so as to form crimps which will effectively resist unintentional separation of the sheets of paper when pulled in a crosswise as well as in a lengthwise direction or in other words, when pulled in directions at right angles to one another, certain of said teeth being angularly related to other of said teeth, for example at right; angles, for the purpose above stated.

Referring to the drawing:

Fig. 1 is a longitudinal sectional view taken on the line I-I of Fig. 2, showing one form of press embodying my invention.

Fig. 2 is a fragmentary top plan view of the press with parts shown in section.

Fig, 3 is a sectional view taken on the line 3 3 of Fig. 1.

Fig. 4 is an enlarged fragmentary cross-section of the press taken through the dies and adjacent portions of the press.

Fig. 5 is a fragmentary top plan view of one of the dies.

, Fig. 6 is a fragmentary top plan View of a modied form of die.

Fig. '7 is a perspective view of a plurality of paper sheets as fastened by the press of the invention.

Fig. 8 is a fragmentary longitudinal section of the die shown in Fig. 5.

Fig. 9 is a fragmentary longitudinal section of the die shown in Fig. 6.

In the embodiment of the invention as shown in detail in the accompanying drawing, the hand press comprises an elongated base 8 having between its ends a transverse recess 9 in which a crimping die II! is iixed so that it will engage the lower side of the lowermost sheet of several paper sheets P which may be placed on the base as shown in Fig. 4, preparatory to the fastening or bin-ding such sheets together, said die being elongated and extending transversely of said base.

Extending upwardly from one end portion of the base is a small and somewhat dome-shaped housing H formed of laterally spaced side walls II formed integrally with or otherwise xed to said base, and an arcuate top wall I2 which extends between the sai-d walls at the curved upper edges thereof. Pivoted between its ends on a screw pin I3, extending between the side walls II, is an elongated jaw or lever I4 having near one end a transverse recess I5 in which is fixed a crimping die I6 corresponding to and adapted to cooperate with the die IIJ so that the dies may be pressed together with the sheets of paper therebetween as will be hereinafter more fully described. In the side walls I I are slots I1 into which the paper sheets are inserted so as to be positioned between the dies, the ends of these slots providing stop shoulders I8 for engaging and lining up the edges of the paper sheets. f

As a means for operating the lever Yor jaw I4 for moving the die so as to crimp and fasten together the paper sheets, I have here provided a relatively long lever-handle I9 having an arcuate bifurcated end, the furcations 20 of which are pivoted on a screw pin 2I extending between the sides II. An arcuate link 22 is pivoted at one end as at 23 to the lever above the pin 2| and at its other end as at 24 to the lever I4, the pivots 23 and 24 being freely movable between the said walls II. A suitable expansion spring 25 is seated in a socket 26 in the lever I4 and a similar socket 2'I in the handle I9 as shown in Fig. 1 and operates to hold the handle and lever I4 in raised position whereby sheets of paper may be inserted between the dies. When the handle I9 is depressed the link 22 rocks the lever I4 so as to move the die I6 towards the die I and thereby crimp the paper sheets so as to bind them together as shown in Figs. 4 and '7. This operating means prol vides such leverage that but little effort on the part of the operator is required to provide a great deal of die pressure on the paper sheets and thereby effect a secure binding of the sheets together.

An important feature of my invention is the provision of especially constructed die teeth arranged so that the crimps formed thereby in the paper sheet will effectively b-ind or weld the sheet together and will not mutilate the paper when formed or cause the paper to tear or become mutilated when intentionally pulled apart. Moreover the crimps are formed so that they are comparatively small and shallow and do not prove unsightly or form appreciably raised or hurnped portions in the paper, the effect being a comparatively smooth weld joint occupying small area.

As particularly shown in Figs. 4, 5 and 8, each die has a row of teeth T extending in closely spaced relation transversely of the die, and groups of similar teeth T' at the ends of said row, but

extending at right angles to the teeth T. I may use a single group of teeth T contiguous with one end of the row of teeth T or in any other manner arrange the teeth so as to be angularly related. The teeth T and T' are identical as to shape and size and each is substantially hourglass shaped in that it is widest at its ends and tapered so as to be gradually reduced in thickness towards a point centrally of its ends. The outer edge or face of each tooth is flat transversely, but may be curved or arcuate in the direction of its length as shown in Fig. 8. 'Ihe sides of the teeth are beveled as at 30. Due to this tooth construction the two'dies will become enmeshed with one another in such manner as to form in the sheets of paper a row interlocking crirnps 3l having at the ends of said row, groups of crimps 32 extending at right angles to the crirnps 3 I. This is clearly shown in Figs. 4 and 7. The paper sheets thus become interlaced and fastened together without mutilation due to the fact that the crimps take the shape of the teeth and those of one sheet of paper become enrneshed with the crimps in the sheets of paper next adjacent thereto. The crimps formed by the teeth are in effect a series of small ribs and grooves and appear as a line or row of small corrugations. Due to the pressure exerted in forming them, the crimps are interlaced and form a weld By having the end teeth T at right angles to the teeth T, the paper sheets will be fastened together so as to effectively resist being pulled apart unintentionally when the pull is directed crosswise as well as lengthwise of the sheets.

As shown in Figs. 6 and 9, the dies may be made with teeth 34 which for the most part have straight and horizontal outer edges instead of the curved edges provided on the teeth T and T'. Moreover the teeth 34 are narrower than the teeth T and T and have parallel beveled side surfaces B except where widened at points adjacent the ends of the teeth. The ends of the teeth 36 are slightly rounded as at 3b. At the ends of the row of teeth 34 are groups of die teeth 3'I at right angles to the teeth 3f and serving the saine purpose as the end teeth T.

In both forms these end teeth may be provided on separate die pieces or blocks as is obvious or may be cut on the same block or body as the main crimping teeth T and 34.

It is important to note that the dies have planar teeth whereby the crimps are quickly simultaneously and uniformly made with one pressing operation, merely requiring thev movement of the die I6 towards the die I@ when sheets of paper are positioned between the dies. By having the crimps extending at right angles it is seen that one set of crimps as made with one pressing operation will serve the purpose of a plurality of non-angularly related sets of crirnps requiring several operations of the press.

While I have shown each die as having three sets of teeth it is obvious that I may use but one row or set of teeth such as the ones T and eliminate the end sets T'. or may use the end sets T Without the middle row T or the teeth T and but one set of end teeth T'.

I claim:

1. A paper fastening device comprising: a base having a fiat surface for receiving a plurality of sheets of paper in fastening position and a housing extended above said surface and provided at the sides thereof with apertures for said sheets, a multiple toothed crimping die mounted on said base with the teeth thereon disposed slightly above said surface, a lever pivotally supported in the sides of said housing above said surface, a multiple toothed crimping die carried by said lever in a position above and opposite the die on said base, the teeth on said pair of dies I,being adapted to mesh when sheets of paper are disposed therebetween so as to deform and effect an interlocking of said sheets, an operating handle pivotally supported on said housing, and a link connecting the rear portions of said handle and said lever, whereby the depression of said handle will correspondingly depress the forward portion of said lever for operatively engaging said dies with said sheets of paper.

2. A paper fastening device comprising: a base having a flat surface for receiving a plurality of sheets of paper in fastening position and a housing extended above said surface and provided at the sides thereof with apertures for said sheets, a multiple toothed crimping die mounted on said base with the teeth thereon disposed slightly above said surface, a lever pivotally supported in the sides of said housing above said surface, a multiple toothed crimping die carried by said lever in a position above and opposite the die on said base, the teeth on said pair of dies being adapted to mesh when sheets of paper are disposed therebetween so as to deform and effect an interlocking of said sheets, an operating handle pivotally supported on said housing, and a link connecting the rear portions of said handle and said lever, whereby the depression of said handle will correspondingly depress the forward portion of said lever for operatively engaging said dies with said sheets of paper, and a spring connection between said handle and said lever for restoring said handle to normal position at the completion of each crimping operation.

3. A paper fastening device comprising: a base having a flat surface for receiving a plurality of sheets of paper in fastening position and a housing extended above said surface and provided at the sides thereof with apertures for said sheets, a, multiple toothed crimping die mounted on said base with the teeth thereon disposed slightly above said surface, a lever pivotally supported in the sides of said housing above said surface, a multiple toothed crimping die carried by said lever in a position above and opposite the die on said base, the teeth on said pair of dies being adapted to mesh when sheets of paper are disposed therebetween so as to deform and effect an interlocking of said sheets, an operating handle pivotally supported on said housing, and a link connecting the rear portions of said handle and said lever, whereby the depression of said handle will correspondingly depress the forward position of said lever for operatively engaging said dies with said sheets of paper, the connection between said link and handle being forwardly of the axis of the handle.

4. A paper fastening device comprising: a base having a ilat surface for receiving a plurality of sheets of paper in fastening position and a housing extended above said surface and provided at the sides thereof with apertures for said sheets,

a multiple toothed crimping die mounted on said base with the teeth thereon disposed slightly above said surface, a lever pivotally supported in the sides of said housing above said surface, a multiple toothed crimping die carried by said lever in a position above and opposite the die on said base, the teeth on said pair of dies being adapted to mesh when sheets of paper are disposed therebetween so as to deform and effect an interlocking of said sheets, an operating handle pivotally supported on said housing, and a link connecting the rear portion of said handle and said lever, whereby the depression of said handle will correspondingly depress the forward portion of said lever for operatively engaging said dies with said sheets of paper, said dies being positioned intermediate the apertures in Said housing and the rear extremities of the apertures serving to limit the movement of and position the sheets of paper relative to said dies for an ensuing crimping operation.

NORMAN S. NOLL. 

